Where applicable, this paragraph
should state the reliability requirements numerically (with confidence levels,
if appropriate). As a minimum, a reliability requirement should consist
of a specified reliability, time associated with the specified reliability,
and a desired confidence level. For example, you could specify that a
product should have a 90% reliability at 1000 hours of operation with a 95%
confidence level. In simpler terms, this means that we want to be 95%
confident that 90% of the population will survive at least 1000 hours.